src/modules/m_deaf.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd: (C) 2002-2007 InspIRCd Development Team
   6  * See: http://www.inspircd.org/wiki/index.php/Credits
   7  *
   8  * This program is free but copyrighted software; see
   9  *            the file COPYING for details.
  10  *
  11  * ---------------------------------------------------
  12  */
  13
  14 #include "inspircd.h"
  15 #include "users.h"
  16 #include "channels.h"
  17 #include "modules.h"
  18
  19 /* $ModDesc: Provides support for ircu style usermode +d (deaf to channel messages and channel notices) */
  20
  21 /** User mode +d - filter out channel messages and channel notices
  22  */
  23 class User_d : public ModeHandler
  24 {
  25  public:
  26         User_d(InspIRCd* Instance) : ModeHandler(Instance, 'd', 0, 0, false, MODETYPE_USER, false) { }
  27
  28         ModeAction OnModeChange(User* source, User* dest, Channel* channel, std::string &parameter, bool adding)
  29         {
  30                 if (adding)
  31                 {
  32                         if (!dest->IsModeSet('d'))
  33                         {
  34                                 dest->WriteServ("NOTICE %s :*** You have enabled usermode +d, deaf mode. This mode means you WILL NOT receive any messages from any channels you are in. If you did NOT mean to do this, use /mode %s -d.", dest->nick, dest->nick);
  35                                 dest->SetMode('d',true);
  36                                 return MODEACTION_ALLOW;
  37                         }
  38                 }
  39                 else
  40                 {
  41                         if (dest->IsModeSet('d'))
  42                         {
  43                                 dest->SetMode('d',false);
  44                                 return MODEACTION_ALLOW;
  45                         }
  46                 }
  47                 return MODEACTION_DENY;
  48         }
  49 };
  50
  51 class ModuleDeaf : public Module
  52 {
  53         User_d* m1;
  54
  55         std::string deaf_bypasschars;
  56         std::string deaf_bypasschars_uline;
  57
  58  public:
  59         ModuleDeaf(InspIRCd* Me)
  60                 : Module(Me)
  61         {
  62                 m1 = new User_d(ServerInstance);
  63                 if (!ServerInstance->AddMode(m1, 'd'))
  64                         throw ModuleException("Could not add new modes!");
  65
  66                 OnRehash(NULL, "");
  67         }
  68
  69         void Implements(char* List)
  70         {
  71                 List[I_OnUserPreMessage] = List[I_OnUserPreNotice] = List[I_OnRehash] = List[I_OnBuildExemptList] = 1;
  72         }
  73
  74         virtual void OnRehash(User* user, const std::string&)
  75         {
  76                 ConfigReader* conf = new ConfigReader(ServerInstance);
  77                 deaf_bypasschars = conf->ReadValue("deaf", "bypasschars", 0);
  78                 deaf_bypasschars_uline = conf->ReadValue("deaf", "bypasscharsuline", 0);
  79
  80                 DELETE(conf);
  81         }
  82
  83         virtual int OnUserPreNotice(User* user,void* dest,int target_type, std::string &text, char status, CUList &exempt_list)
  84         {
  85                 if (target_type == TYPE_CHANNEL)
  86                 {
  87                         Channel* chan = (Channel*)dest;
  88                         if (chan)
  89                                 this->BuildDeafList(MSG_NOTICE, chan, user, status, text, exempt_list);
  90                 }
  91
  92                 return 0;
  93         }
  94
  95         virtual int OnUserPreMessage(User* user,void* dest,int target_type, std::string &text, char status, CUList &exempt_list)
  96         {
  97                 if (target_type == TYPE_CHANNEL)
  98                 {
  99                         Channel* chan = (Channel*)dest;
 100                         if (chan)
 101                                 this->BuildDeafList(MSG_PRIVMSG, chan, user, status, text, exempt_list);
 102                 }
 103
 104                 return 0;
 105         }
 106
 107         virtual void OnBuildExemptList(MessageType message_type, Channel* chan, User* sender, char status, CUList &exempt_list, const std::string &text)
 108         {
 109                 BuildDeafList(message_type, chan, sender, status, text, exempt_list);
 110         }
 111
 112         virtual void BuildDeafList(MessageType message_type, Channel* chan, User* sender, char status, const std::string &text, CUList &exempt_list)
 113         {
 114                 CUList *ulist;
 115                 bool is_a_uline;
 116                 bool is_bypasschar, is_bypasschar_avail;
 117                 bool is_bypasschar_uline, is_bypasschar_uline_avail;
 118
 119                 is_bypasschar = is_bypasschar_avail = is_bypasschar_uline = is_bypasschar_uline_avail = 0;
 120                 if (!deaf_bypasschars.empty())
 121                 {
 122                         is_bypasschar_avail = 1;
 123                         if (deaf_bypasschars.find(text[0], 0) != string::npos)
 124                                 is_bypasschar = 1;
 125                 }
 126                 if (!deaf_bypasschars_uline.empty())
 127                 {
 128                         is_bypasschar_uline_avail = 1;
 129                         if (deaf_bypasschars_uline.find(text[0], 0) != string::npos)
 130                                 is_bypasschar_uline = 1;
 131                 }
 132
 133                 /*
 134                  * If we have no bypasschars_uline in config, and this is a bypasschar (regular)
 135                  * Than it is obviously going to get through +d, no build required
 136                  */
 137                 if (!is_bypasschar_uline_avail && is_bypasschar)
 138                         return;
 139
 140                 switch (status)
 141                 {
 142                         case '@':
 143                                 ulist = chan->GetOppedUsers();
 144                                 break;
 145                         case '%':
 146                                 ulist = chan->GetHalfoppedUsers();
 147                                 break;
 148                         case '+':
 149                                 ulist = chan->GetVoicedUsers();
 150                                 break;
 151                         default:
 152                                 ulist = chan->GetUsers();
 153                                 break;
 154                 }
 155
 156                 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 157                 {
 158                         /* not +d ? */
 159                         if (!i->first->IsModeSet('d'))
 160                                 continue; /* deliver message */
 161                         /* matched both U-line only and regular bypasses */
 162                         if (is_bypasschar && is_bypasschar_uline)
 163                                 continue; /* deliver message */
 164
 165                         is_a_uline = ServerInstance->ULine(i->first->server);
 166                         /* matched a U-line only bypass */
 167                         if (is_bypasschar_uline && is_a_uline)
 168                                 continue; /* deliver message */
 169                         /* matched a regular bypass */
 170                         if (is_bypasschar && !is_a_uline)
 171                                 continue; /* deliver message */
 172
 173                         /* don't deliver message! */
 174                         exempt_list[i->first] = i->first->nick;
 175                 }
 176         }
 177
 178         virtual ~ModuleDeaf()
 179         {
 180                 ServerInstance->Modes->DelMode(m1);
 181                 DELETE(m1);
 182         }
 183
 184         virtual Version GetVersion()
 185         {
 186                 return Version(1,1,0,0,VF_COMMON|VF_VENDOR,API_VERSION);
 187         }
 188
 189 };
 190
 191 MODULE_INIT(ModuleDeaf)